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Kindly have a look at comments section of the question.
You shouldn’t ask doubts related to ongoing contest on Codechef Discuss, please use Comments section.
I did, the guy is clearly nullifying the meaning of the word “strictly” by saying that the first or last character can be uppercase, if so, then why even mention the condition explicitly in the problem??
Also, I posted this after 00:00 IST on 25/01/2021, before I got to know that the contest timings have been extended, kindly excuse me…